The smoothing algorithms for mountain charts in for Android applications is often used to show the smoothed data, when the raw data is too much to be displayed on a screen. It is important that the charts are easy to read, and the data displayed provides meaningful insides to the trends. That is why spline series and smoothing the charts are commonly used in Android mobile applications. The android spline mountain series will give the charts its slick look, so that the customers can have a great user experience with your android applications.

This example demonstrates how to create a Spline Mountain Series for Android applications in Java using SplineMountainRenderableSeries type. The Spline Mountain series API is very flexible and allows you to specify area brush and stroke pen to apply the colors you need. You can also render a gap in series and add point markers onto it.

Read more in the SciChart Android Spline Mountain Series documentation.

Also see: Spline Band Series and Spline Line series.

// Kotlin: SplineMountainChartFragment.kt

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SplineMountainChartFragment.kt is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************

package com.scichart.examples.fragments.examples2d.basicChartTypes.kt

import android.view.animation.DecelerateInterpolator
import com.scichart.charting.visuals.SciChartSurface
import com.scichart.data.model.DoubleRange
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment
import com.scichart.examples.utils.scichartExtensions.*

class SplineMountainChartFragment : ExampleSingleChartBaseFragment() {

    override fun initExample(surface: SciChartSurface) {
        surface.suspendUpdates {
            xAxes { numericAxis { growBy = DoubleRange(0.1, 0.1) }}
            yAxes { numericAxis { growBy = DoubleRange(0.0, 0.2) }}
            renderableSeries {
                splineMountainRenderableSeries {
                    xyDataSeries<Int, Int> {
                        val yValues = intArrayOf(50, 35, 61, 58, 50, 50, 40, 53, 55, 23, 45, 12, 59, 60)
                        for (i in yValues.indices) {
                            append(i, yValues[i])
                        }
                    }
                    strokeStyle = SolidPenStyle(0xAAFFC9A8)
                    areaStyle = LinearGradientBrushStyle(0xAAFF8D42, 0x88090E11)
                    ellipsePointMarker {
                        setSize(7)
                        strokeStyle = SolidPenStyle(0xFF006400)
                        fillStyle = SolidBrushStyle(0xFFFFFFFF)
                    }

                    waveAnimation { interpolator = DecelerateInterpolator() }
                }
            }
            chartModifiers { defaultModifiers() }
        }
    }
}

// Java: SplineMountainChartFragment.java

//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2021. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales:   sales@scichart.com
//
// SplineMountainChartFragment.java is part of SCICHART®, High Performance Scientific Charts
// For full terms and conditions of the license, see http://www.scichart.com/scichart-eula/
//
// This source code is protected by international copyright law. Unauthorized
// reproduction, reverse-engineering, or distribution of all or any portion of
// this source code is strictly prohibited.
//
// This source code contains confidential and proprietary trade secrets of
// SciChart Ltd., and should at no time be copied, transferred, sold,
// distributed or made available without express written permission.
//******************************************************************************

package com.scichart.examples.fragments.examples2d.basicChartTypes;

import android.view.animation.DecelerateInterpolator;

import androidx.annotation.NonNull;

import com.scichart.charting.model.dataSeries.IXyDataSeries;
import com.scichart.charting.visuals.SciChartSurface;
import com.scichart.charting.visuals.axes.IAxis;
import com.scichart.charting.visuals.pointmarkers.EllipsePointMarker;
import com.scichart.charting.visuals.renderableSeries.SplineMountainRenderableSeries;
import com.scichart.core.framework.UpdateSuspender;
import com.scichart.examples.fragments.base.ExampleSingleChartBaseFragment;

import java.util.Collections;

public class SplineMountainChartFragment extends ExampleSingleChartBaseFragment {

    @Override
    protected void initExample(@NonNull SciChartSurface surface) {
        final IAxis xBottomAxis = sciChartBuilder.newNumericAxis().withGrowBy(0.1d, 0.1d).build();
        final IAxis yRightAxis = sciChartBuilder.newNumericAxis().withGrowBy(0d, 0.2d).build();

        final IXyDataSeries<Integer, Integer> dataSeries = sciChartBuilder.newXyDataSeries(Integer.class, Integer.class).build();
        final int[] yValues = {50, 35, 61, 58, 50, 50, 40, 53, 55, 23, 45, 12, 59, 60};
        for (int i = 0; i < yValues.length; i++) {
            dataSeries.append(i, yValues[i]);
        }

        final SplineMountainRenderableSeries rSeries = sciChartBuilder.newSplineMountainSeries()
                .withDataSeries(dataSeries)
                .withStrokeStyle(0xAAFFC9A8, 1f, true)
                .withAreaFillLinearGradientColors(0xAAFF8D42, 0x88090E11)
                .withPointMarker(sciChartBuilder.newPointMarker(new EllipsePointMarker()).withSize(7, 7).withStroke(0xFF006400, 1).withFill(0xFFFFFFFF).build())
                .build();

        UpdateSuspender.using(surface, () -> {
            Collections.addAll(surface.getXAxes(), xBottomAxis);
            Collections.addAll(surface.getYAxes(), yRightAxis);
            Collections.addAll(surface.getRenderableSeries(), rSeries);
            Collections.addAll(surface.getChartModifiers(), sciChartBuilder.newModifierGroupWithDefaultModifiers().build());

            sciChartBuilder.newAnimator(rSeries).withWaveTransformation().withInterpolator(new DecelerateInterpolator()).withDuration(3000).withStartDelay(350).start();
        });
    }
}

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